mirror of https://github.com/rust-lang/rust
17 lines
423 B
Rust
17 lines
423 B
Rust
use std::hash::BuildHasher;
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fn next_u64() -> u64 {
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let bh = std::hash::RandomState::new();
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let h = bh.build_hasher();
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h.finish() //~ ERROR no method named `finish` found for struct `DefaultHasher`
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}
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trait Bar {}
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impl Bar for String {}
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fn main() {
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let s = String::from("hey");
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let x: &dyn Bar = &s;
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x.as_ref(); //~ ERROR the method `as_ref` exists for reference `&dyn Bar`, but its trait bounds
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}
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